Polythosides A and B, two new triterpenoid saponins from the roots of Acacia polyacantha Willd. (Mimosaceae)
作者:Abdou Tchoukoua、Sandrine Carole Tomfeun Nganou、Bernard Dabole、Jun Yoshida、Yoshiaki Ito、Bonaventure Tchaleu Ngadjui、Yoshihito Shiono
DOI:10.1016/j.phytol.2021.04.007
日期:2021.6
Two new oleanane-type triterpene saponins, named polythosides A and B (1 and 2), together with a known compound, silphioside E (3), were isolated from the roots of Acacia polyacantha. Their structures were elucidated by analysis of 1D and 2D-NMR experiments, and mass spectrometry (HR-ESITOF-MS) as oleanolic acid 3-O-β-d-galactopyranosyl-(1→2)-β-d-xylopyranosyl-(1→6)-[β-d-xylopyranosyl-(1→4)]-[β-d-
从洋相思的根中分离出两个新的齐墩果烷型三萜皂苷,分别称为多thosides A和B(1和2),以及一种已知的化合物silphioside E(3)。其结构经的1D和2D-NMR实验分析,和质谱(HR-ESITOF-MS)为齐墩果酸3-阐明ö - β - d -galactopyranosyl-(1→2) - β - d -xylopyranosyl-( 1→6)-[ β - d-吡喃吡喃糖基- (1→4)]-[ β - d-吡喃吡喃糖基- (1→2)]- β - d-吡喃吡喃糖苷(1),3- O- [ β - d-吡喃并吡喃糖基- (1→2)-β - d-吡喃并吡喃糖基- (1→6)-[ β - d-吡喃并吡喃糖基- (1→4)]-[ β - d -xylopyranosyl-(1→2)] - β - d -galactopyranosyl]齐墩果酸-28- ø - β - d吡喃葡萄糖基酯(2)和3-